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