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