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