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