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