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