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