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