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