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