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