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