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