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