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