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