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