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