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