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