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