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