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