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