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