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