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)(11,15)(12,14)(13,16)(19,23)(21,24)(25,26,29,31)(27,28,32,30)(1,2)(3,5)(4,6)(7,8)(9,10,14,12)(11,16,13,15)(27,32)(28,30)(2,3)(6,7)(9,11,14,13)(10,15,12,16)(17,18,20,22)(19,21,23,24)(25,27)(26,30)(28,31)(29,32)(1,3,5,2)(4,7,8,6)(9,12,14,10)(11,15,13,16)(17,19)(18,21)(20,23)(22,24)(25,28,29,30)(26,27,31,32)(1,4,5,8)(2,6,3,7)(9,13,14,11)(10,15,12,16)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.