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