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