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