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