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