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