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