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