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