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)(11,14)(12,13)(15,16)(17,18)(19,26)(20,23)(21,24)(22,25)(27,32)(28,31)(29,30)(1,3,4,8)(2,5,6,7)(19,27)(20,29)(22,28)(23,30)(25,31)(26,32)(10,13)(14,16)(17,19,22,27,21,20,28,29)(18,23,25,30,24,26,31,32)(17,20,22,29,21,19,28,27)(18,23,25,30,24,26,31,32)(9,11,12,15)(10,14,13,16)(18,24)(23,26)(25,31)(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.