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