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