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