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