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