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