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