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