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