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)(19,23,30,39)(20,24,32,41)(21,25,35,44)(27,36,45,47)(28,37,29,38)(31,40,46,48)(33,42,34,43)(1,3,5,4)(2,6,8,7)(9,11,12,15)(10,13,14,16)(17,19)(18,23)(20,31)(21,28)(22,30)(24,40)(25,37)(26,39)(27,33)(29,35)(32,46)(34,45)(36,42)(38,44)(41,48)(43,47)(1,3,5,4)(2,7,8,6)(10,14)(13,16)(17,20)(18,24)(19,27)(21,34)(22,32)(23,36)(25,43)(26,41)(28,31)(29,46)(30,45)(33,35)(37,40)(38,48)(39,47)(42,44)(1,4,5,3)(2,6,8,7)(19,28)(21,35)(23,37)(25,44)(27,31)(29,30)(33,34)(36,40)(38,39)(42,43)(45,46)(47,48)(20,32)(24,41)(27,45)(31,46)(33,34)(36,47)(40,48)(42,43) involution — undirectedA 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.