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