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