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