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