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