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