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