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