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