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