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