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