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