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