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