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