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