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)(17,18,21,25,22,19,26,24)(20,23,28,31,29,27,32,30)(1,2)(3,4)(9,11,13,12)(10,14,15,16)(17,19)(18,22)(20,27)(21,25)(23,29)(24,26)(28,31)(30,32)(2,4)(10,15)(14,16)(17,20,22,29)(18,23,19,27)(21,28,26,32)(24,30,25,31)(6,8)(9,12,13,11)(10,16,15,14)(18,24)(19,25)(21,26)(23,30)(27,31)(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.