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