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