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