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)(17,18,22,26,23,27,21,31)(19,24,28,25,20,29,30,32)(1,2,4,3)(5,7,8,6)(9,11,12,16)(10,13,14,15)(17,19,23,20)(18,24,27,29)(21,30,22,28)(25,31,32,26)(11,16)(13,15)(17,20,23,19)(18,25,27,32)(21,30,22,28)(24,31,29,26)(1,3,4,2)(10,14)(13,15)(17,21,23,22)(18,26,27,31)(19,28,20,30)(24,32,29,25)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.