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