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