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