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