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