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