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