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