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