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