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