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