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