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