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