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)(11,12)(17,18,24,28,23,29,22,32)(19,20,26,27,30,25,21,31)(1,3)(2,5)(4,7)(6,8)(9,10)(11,16)(12,15)(13,14)(17,19)(18,25)(20,29)(21,22)(23,30)(24,26)(27,32)(28,31) involution — undirected(2,6)(3,7)(9,11,13,12)(10,15,14,16)(17,20,22,31,23,25,24,27)(18,26,32,19,29,21,28,30)(2,6)(5,8)(9,11,13,12)(10,15,14,16)(17,21,23,26)(18,27,29,31)(19,22,30,24)(20,28,25,32)(9,12,13,11)(10,15,14,16)(17,22,23,24)(18,28,29,32)(19,26,30,21)(20,31,25,27)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.