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