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