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