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