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