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