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