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