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