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