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