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