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