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