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