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