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