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