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