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)(19,26)(24,32)(27,29)(30,31) involution — undirected(1,3,5,4)(2,6,7,8)(9,11,12,15)(10,13,14,16)(18,22)(19,27)(20,28)(23,25)(26,29)(30,31)(10,14)(13,16)(17,18,21,25)(19,24,26,32)(20,23,28,22)(27,30,29,31)(1,4,5,3)(2,6,7,8)(18,23)(19,27)(20,28)(22,25)(24,32)(26,29)(17,19,21,26)(18,24,25,32)(20,29,28,27)(22,30,23,31)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.