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