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)(11,15)(12,13)(14,16)(18,22)(19,20)(25,26,29,32)(27,28,31,30)(1,3)(2,4)(5,8)(6,7)(9,10,13,12)(11,14,16,15)(17,18)(19,23)(20,24)(21,22)(25,27,29,31)(26,30,32,28)(2,6)(4,7)(10,12)(14,15)(17,19,21,20)(18,23,22,24)(25,26,29,32)(27,30,31,28)(1,3)(2,7)(4,6)(5,8)(9,11)(10,14)(12,15)(13,16)(17,20,21,19)(18,24,22,23)(25,27)(26,30)(28,32)(29,31)(1,4,5,7)(2,8,6,3)(9,12,13,10)(11,14,16,15)(17,18)(19,24)(20,23)(21,22)(25,28,29,30)(26,31,32,27)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.