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