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