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