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