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