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