One vertex per element, one color per generator, with an edge from x to x·s.
(5,6)(7,8)(9,10,13,15)(11,14,12,16)(17,18,21,25,22,26,23,20)(19,27,30,28,31,29,32,24)(1,2,3,4)(9,11,13,12)(10,14,15,16)(17,19,22,31)(18,24,26,28)(20,27,25,29)(21,32,23,30)(2,4)(9,12,13,11)(10,14,15,16)(17,20,21,18,22,25,23,26)(19,28,30,29,31,24,32,27)(6,8)(17,18,21,25,22,26,23,20)(19,29,30,24,31,27,32,28)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.