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