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