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