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