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