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