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