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