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