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