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