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