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