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