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