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