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