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