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