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