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