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