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