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