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