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