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