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