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