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