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)(11,16)(12,13)(14,15)(17,18)(19,22)(20,23)(21,24)(26,30)(28,31)(1,3)(2,5)(4,8)(6,7)(9,10,14,15)(11,16,12,13)(17,19)(18,21)(20,24)(22,23)(26,30)(27,32)(3,8)(5,6)(9,11,14,12)(10,13,15,16)(17,19,20,24)(18,22,23,21)(25,26)(27,31)(28,32)(29,30)(1,2)(3,6)(4,7)(5,8)(9,12,14,11)(10,13,15,16)(17,18)(19,22)(20,23)(21,24)(25,27,29,32)(26,31,30,28)(1,3)(2,6)(4,8)(5,7)(9,13)(10,11)(12,15)(14,16)(17,19)(18,22)(20,24)(21,23)(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.