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)(19,27)(20,23)(21,25)(22,26)(24,28)(29,31)(30,32)(2,3)(6,7)(9,10)(11,14)(12,13)(15,16)(17,19)(18,24)(20,27)(21,22)(23,28)(25,30)(26,29)(31,32) involution — undirected(2,3)(4,8)(10,13)(11,15)(21,31)(22,32)(25,29)(26,30) involution — undirected(2,3)(6,7)(11,15)(14,16)(17,20,23,18)(19,27,28,24)(21,25,31,29)(22,30,32,26)(1,3,5,2)(4,7,8,6)(9,11,12,15)(10,14,13,16)(17,21)(18,25)(19,22)(20,29)(23,31)(24,30)(26,27)(28,32)(1,4)(2,6)(3,7)(5,8)(9,10)(11,14)(12,13)(15,16)(17,22)(18,26)(19,21)(20,30)(23,32)(24,29)(25,27)(28,31) 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.