One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(5,6)(7,10)(8,11)(9,12)(13,17)(14,18)(15,19)(16,20)(21,22)(23,33)(24,38)(25,30)(26,31)(27,32)(28,37)(29,40)(34,42)(35,44)(36,43)(39,46)(41,45)(47,49)(48,52)(50,51) involution — undirected(2,4)(5,7)(6,10)(8,15)(9,13)(11,19)(12,17)(14,16)(18,20)(21,23,26,36,27,35,25,37)(22,28,30,44,32,43,31,33)(24,34,40,49,41,48,39,50)(29,42,38,51,46,52,45,47)(7,13)(10,17)(14,15)(18,19)(21,24,25,39,27,41,26,40)(22,29,31,45,32,46,30,38)(23,34,37,50,35,48,36,49)(28,42,33,47,43,52,44,51)(5,8,9,16)(6,11,12,20)(7,14,13,15)(10,18,17,19)(23,35)(28,43)(33,44)(34,48)(36,37)(42,52)(47,51)(49,50)(6,12)(10,17)(11,20)(18,19)(21,25,27,26)(22,30,32,31)(23,36,35,37)(24,39,41,40)(28,33,43,44)(29,38,46,45)(34,49,48,50)(42,47,52,51)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.