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