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