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