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