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