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