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