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