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