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