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)(11,13)(12,16)(14,15)(17,18)(19,23)(20,22)(21,24)(26,30)(28,31)(1,3,5,8)(2,6,7,4)(10,15)(11,12)(17,19,20,24)(18,21,22,23)(26,30)(28,31)(2,7)(3,8)(9,11,14,12)(10,13,15,16)(17,18,20,22)(19,21,24,23)(25,26)(27,31)(28,32)(29,30)(1,4,5,6)(2,3,7,8)(9,12,14,11)(10,16,15,13)(17,19)(18,21)(20,24)(22,23)(25,27,29,32)(26,31,30,28)(1,3)(2,4)(5,8)(6,7)(9,13,14,16)(10,12,15,11)(17,18)(19,23)(20,22)(21,24)(25,28,29,31)(26,32,30,27)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.