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