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)(20,23)(21,22)(26,30)(28,31) involution — undirected(1,2,5,4)(3,6,7,8)(9,10,13,12)(11,16,15,14)(17,19,21,23)(18,20,22,24)(25,26,29,30)(27,28,32,31)(11,15)(14,16)(18,22)(19,23)(25,27,29,32)(26,31,30,28)(1,3)(2,6)(4,8)(5,7)(9,11,13,15)(10,14,12,16)(17,18)(19,20)(21,22)(23,24)(25,27)(26,31)(28,30)(29,32)(1,4,5,2)(3,8,7,6)(9,12,13,10)(11,14,15,16)(17,20)(18,23)(19,22)(21,24)(25,28,29,31)(26,32,30,27)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.