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