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