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