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