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