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