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