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