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