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