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