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