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