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