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