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