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