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