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