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