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