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