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