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