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