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