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