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