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