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