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