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