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