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