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