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