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