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