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