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