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