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