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