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