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