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