One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,6)(3,5,7,8)(17,18,24,23)(19,27,21,25)(20,26,29,32)(22,28,30,31)(1,3,4,7)(2,5,6,8)(9,10)(11,16)(12,14)(13,15)(17,19,24,21)(18,25,23,27)(20,22,29,30)(26,31,32,28)(1,2)(3,5)(4,6)(7,8)(9,11)(10,12)(13,14)(15,16)(17,20,24,29)(18,26,23,32)(19,22,21,30)(25,31,27,28)(11,14)(12,16)(17,21,24,19)(18,27,23,25)(20,22,29,30)(26,31,32,28)(1,3)(2,5)(4,7)(6,8)(9,12,13,16)(10,14,15,11)(17,22)(18,28)(19,29)(20,21)(23,31)(24,30)(25,26)(27,32)(1,2)(3,5)(4,6)(7,8)(9,10)(11,16)(12,14)(13,15)(17,23,24,18)(19,27,21,25)(20,26,29,32)(22,31,30,28)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.