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