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