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