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