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