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