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