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