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