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