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