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