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