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