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