One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,6)(5,8)(9,10,16,21)(11,17,25,41)(12,26,28,53)(13,19,15,36)(14,34,35,61)(18,42,43,30)(20,33,45,27)(22,46,48,68)(23,38,32,40)(24,51,52,66)(29,54,31,59)(37,62,63,50)(39,60,67,47)(44,56,55,58)(49,69,57,70)(64,72,65,71)(1,3)(2,5)(4,8)(6,7)(9,11)(10,17)(12,22)(13,32)(14,24)(15,23)(16,25)(18,37)(19,40)(20,39)(21,41)(26,46)(27,47)(28,48)(29,57)(30,50)(31,49)(33,60)(34,51)(35,52)(36,38)(42,62)(43,63)(44,65)(45,67)(53,68)(54,70)(55,64)(56,71)(58,72)(59,69)(61,66) involution — undirected(9,12,27,56,15,31,35,42,16,28,33,58,13,29,14,30)(10,18,34,54,19,44,45,53,21,43,61,59,36,55,20,26)(11,22,47,71,23,49,52,62,25,48,60,72,32,57,24,50)(17,37,51,70,40,65,67,68,41,63,66,69,38,64,39,46)(3,8)(5,7)(12,28)(18,43)(22,48)(26,53)(29,31)(30,42)(37,63)(44,55)(46,68)(49,57)(50,62)(54,59)(56,58)(64,65)(69,70)(71,72) involution — undirected(2,6)(5,7)(9,13,16,15)(10,19,21,36)(11,23,25,32)(12,29,28,31)(14,33,35,27)(17,38,41,40)(18,44,43,55)(20,34,45,61)(22,49,48,57)(24,47,52,60)(26,54,53,59)(30,58,42,56)(37,64,63,65)(39,66,67,51)(46,69,68,70)(50,71,62,72)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.