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