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