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