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