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