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