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