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