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