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