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