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