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