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