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