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