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