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