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