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