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