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