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