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