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