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