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