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