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