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