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