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