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