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