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