Diouf brought a very young side to South Africa with a number of their big-name players having pulled out ahead of the international friendly.
And despite creating numerous chances, Pitso Mosimane's team failed to break down the Teranga Lions.
After the match, Diouf, who is tasked with rebuilding his side following a disappointing AFCON 2012, said he was impressed with their opponents on the night.
He said: "We trying to build this team again. I thought South Africa played well, they were very strong tactically. I admire they way they fought and the manner in which they tried to win the ball back.
"I was particularly impressed with Steven Pienaar and Punch Masenamela."