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