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