One vertex per element, one color per generator, with an edge from x to x·s.
(1,2) involution — undirected(3,4)(5,11,13,8)(6,9)(7,10)(12,17,18,15)(14,16)(19,20,23,27,24,28,34,40)(21,25,31,37,30,36,44,48)(22,26,33,39,32,38,45,49)(29,41,43,50,42,35,46,47)(3,5)(4,8)(6,12)(7,13)(9,15)(10,11)(14,18)(16,17)(19,21)(20,25)(22,29)(23,31)(24,30)(26,35)(27,37)(28,36)(32,42)(33,43)(34,44)(38,41)(39,47)(40,48)(45,46)(49,50) involution — undirected(3,6,7,14)(4,9,10,16)(5,12,13,18)(8,15,11,17)(19,22)(20,26)(21,29)(23,33)(24,32)(25,35)(27,39)(28,38)(30,42)(31,43)(34,45)(36,41)(37,47)(40,49)(44,46)(48,50)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.