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