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