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