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