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)(11,14)(12,15)(13,16)(17,18,22,24)(19,21,20,23)(26,27)(28,32)(2,5)(6,7)(9,11)(10,13)(12,16)(14,15)(17,19)(18,23)(20,22)(21,24)(26,27)(30,31) involution — undirected(3,8)(6,7)(11,16)(13,14)(18,24)(19,20)(25,26,29,27)(28,30,32,31)(1,3,4,8)(2,6,5,7)(9,11)(10,14)(12,16)(13,15)(17,20,22,19)(18,21,24,23)(25,27,29,26)(28,31,32,30)(1,2)(3,6)(4,5)(7,8)(9,10)(11,14)(12,15)(13,16)(17,21)(18,19)(20,24)(22,23)(25,28)(26,30)(27,31)(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.