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