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