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