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