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