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