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