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