One vertex per element, one color per generator, with an edge from x to x·s.
(5,6)(7,11)(8,12)(9,10)(15,25)(16,30)(17,18)(20,26)(21,38)(22,23)(27,32)(28,29)(31,40)(33,34)(35,39)(36,37) involution — undirected(2,4)(6,10)(11,12)(13,14,19,24)(15,26,29,36)(16,31,33,38)(17,23,18,22)(20,28,37,25)(21,30,40,34)(27,35,32,39)(41,44,43,42)(5,7,9,8)(6,11,10,12)(13,15,18,28,19,29,17,25)(14,20,23,36,24,37,22,26)(16,32,34,41,33,27,30,43)(21,39,31,42,40,35,38,44)(1,2,3,4)(13,16,17,30,19,33,18,34)(14,21,22,38,24,40,23,31)(15,27,25,41,29,32,28,43)(20,35,26,42,37,39,36,44)(5,8,9,7)(6,11,10,12)(16,33)(21,40)(27,32)(30,34)(31,38)(35,39)(41,43)(42,44)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.