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