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)(19,20,24,30,26,29,39,47,25,31,38,48,23,40,22,28)(21,32,35,46,34,27,33,43,36,45,49,42,41,44,37,50)(3,5,7,13)(4,8,10,11)(6,12,14,18)(9,15,16,17)(19,21,25,36)(20,27,31,44)(22,37,39,33)(23,41,26,34)(24,35,38,49)(28,46,47,42)(29,45,40,32)(30,43,48,50)(3,6,7,14)(4,9,10,16)(5,12,13,18)(8,15,11,17)(19,22,23,38,25,39,26,24)(20,28,40,48,31,47,29,30)(21,33,41,35,36,37,34,49)(27,42,32,43,44,46,45,50)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.