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