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