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