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