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