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