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