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