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