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