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