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