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