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