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