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