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