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)(19,25)(20,24)(21,23)(22,26)(27,28)(29,32)(30,31)(2,6)(7,8)(9,10)(11,14)(12,13)(15,16)(17,19,24,30)(18,25,20,31)(21,32,26,27)(22,28,23,29)(1,3,5,4)(2,7,6,8)(10,13)(14,15)(17,20,23,21,24,18,22,26)(19,27,28,25,30,32,29,31)(9,11,12,16)(10,14,13,15)(17,21,23,18,24,26,22,20)(19,25,28,32,30,31,29,27)(1,4,5,3)(2,7,6,8)(17,22,24,23)(18,26,20,21)(19,28,30,29)(25,27,31,32)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.