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