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