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