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