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