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