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