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