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)(11,14)(12,15)(13,16)(17,18,21,24)(19,22,23,20)(25,26,30,27)(28,32,29,31)(2,5)(6,8)(9,11)(10,13)(12,16)(14,15)(17,19,21,23)(18,22,24,20)(25,27,30,26)(28,32,29,31)(3,7)(6,8)(11,16)(13,14)(17,18)(19,22)(20,23)(21,24)(25,28,30,29)(26,31,27,32)(1,3,4,7)(2,6,5,8)(9,11)(10,14)(12,16)(13,15)(25,28,30,29)(26,31,27,32)(1,2)(3,6)(4,5)(7,8)(9,10)(11,14)(12,15)(13,16)(17,20,21,22)(18,23,24,19)(25,29,30,28)(26,32,27,31)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.