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