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