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