They have scored at least three goals in all of their five league games this season, netting 17 in total.
Neymar and Kylian Mbappe both didn't play for PSG against St. Etienne, with Thomas Tuchel resting the former while the latter served a ban for a red card he received before the global break.
"I've got ideas (as to his line-up) but I'm still reflecting on them".
Tuchel became the first manager in history to win his first five games in Ligue 1 as the PSG boss and said after the game that his side's 4-0 win over St. Etienne on Friday was a good rehearsal ahead of the trip to Merseyside to face Liverpool.More news: Guardiola calls for response from Sane
Speaking at a post-match press conference, Tuchel explained the Brazilian's absence.
But Tuchel has admitted he has decisions to make elsewhere for his starting line-up with Marco Verratti having made his first appearance in eight months against Saint-Etienne following a groin injury to replace Marquinhos in central midfield.
PSG's second goal arrived just after half-time, with Cavani converting a penalty, his third goal in as many games this season, after he had been chopped down in the box by Loic Perrin.
Like in PSG's previous two games, goalkeeper Gianluigi Buffon was left on the bench with 25-year-old Frenchman Alphonse Areola preferred in goal.More news: North Carolina Feels First Bite Of Hurricane Florence
Then Diaby rounded off the scoring after Cavani's swipe at a Draxler cutback had turned into an assist for the teenager.
Earlier, Nice came from an own goal down to beat Rennes 2-1, with Pierre Lees Melou grabbing the victor in the 89th minute after Allan Saint-Maximin had levelled to spare the blushes of Malang Sarr who put through his own net just before the hour.
Lyon warm up for their Champions League trip to Manchester City next midweek by going to Caen on Saturday evening.
The French champions were dumped out of last season's competition by Real Madrid, who went on to lift the trophy after beating Liverpool in Kiev.More news: Ibrahimovic happy for '500th victim' Toronto after outrageous goal