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