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