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