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