Warnock rapped the ex-Blackburn ace after Jamie Mackie broke his leg at Ewood Park in January following a Gael Givet tackle.
But Diouf stormed in The Sun: "This guy Warnock talks a lot of s*** and everyone knows he talks a lot of s***.
"He wants to put himself on the front page of the paper all the time but no one is interested in him. Every time we see him on TV he talks s***.
"You see managers talking, like Ferguson, Wenger, Allardyce, Villas-Boas, and you listen.
"But this guy? What has he done in his life? Nobody knows him.
"Watch him with his best player, Adel Taarabt. If it wasn't for Taarabt last year he'd never have been in the Premier League this season.
"But how has he treated him? He has taken the captain's armband off him and treated him like s***. But HE'S the big s***."