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