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