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