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