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