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