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