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