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