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