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