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