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)(17,18,22,27,37,46,35,44,23,28,21,26,20,25,36,45)(19,29,32,42,30,48,38,24,34,41,31,40,33,47,39,43)(1,3)(2,7)(4,12)(5,14)(6,13)(8,11)(9,15)(10,16)(17,19)(18,24)(20,30)(21,38)(22,39)(23,34)(25,40)(26,47)(27,48)(28,43)(29,44)(31,35)(32,36)(33,37)(41,45)(42,46) involution — undirected(2,8)(7,11)(9,10)(15,16)(17,20,23,37)(18,25,28,46)(19,30,34,33)(21,35,22,36)(24,40,43,42)(26,44,27,45)(29,48,41,47)(31,39,32,38)(1,4,6,5)(2,9,8,10)(3,12,13,14)(7,15,11,16)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.