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