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