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