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