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