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