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