One vertex per element, one color per generator, with an edge from x to x·s.
(2,3)(6,8)(17,18,22,23)(19,26,29,24)(20,21,31,25)(27,28,30,32)(9,10,13,12)(11,15,16,14)(18,23)(21,25)(24,26)(28,32)(1,2,4,3)(9,11,13,16)(10,14,12,15)(17,19,22,29)(18,24,23,26)(20,30,31,27)(21,28,25,32)(1,2,4,3)(5,6)(7,8)(17,20)(18,25)(19,27)(21,23)(22,31)(24,28)(26,32)(29,30)(1,3,4,2)(9,12,13,10)(11,15,16,14)(17,21,22,25)(18,20,23,31)(19,28,29,32)(24,30,26,27)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.