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