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