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