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