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