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