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