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