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