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