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