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