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