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