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)(17,18,21,23)(19,22,26,25)(20,24,28,30)(27,29,32,31)(1,3,5,4)(2,6,7,8)(9,10,14,13)(11,16,12,15)(18,22)(19,26)(20,28)(23,25)(24,31)(29,30)(1,4,5,3)(2,6,7,8)(9,11,14,12)(10,15,13,16)(17,19)(18,23)(20,27)(21,26)(24,30)(28,32)(9,12,14,11)(10,15,13,16)(17,20)(18,24)(19,27)(21,28)(22,29)(23,30)(25,31)(26,32)(9,13,14,10)(11,16,12,15)(18,23)(20,28)(22,25)(27,32)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.