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