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