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