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