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