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