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)(17,18,23,21)(19,27,30,24)(20,31,29,25)(22,26,28,32)(33,34,39,44)(35,43,38,40)(36,37,42,41)(45,46,47,48)(1,2,6,3)(4,9,12,7)(5,8,14,10)(11,16,13,15)(17,19)(18,24)(20,28)(21,27)(22,29)(23,30)(25,32)(26,31)(33,35,39,38)(34,40,44,43)(36,45,42,47)(37,48,41,46)(2,3)(7,9)(8,10)(15,16)(33,36,39,42)(34,41,44,37)(35,45,38,47)(40,46,43,48)(1,3,6,2)(4,7,12,9)(5,10,14,8)(11,15,13,16)(17,20,23,29)(18,25,21,31)(19,28,30,22)(24,32,27,26)(33,36)(34,41)(35,45)(37,44)(38,47)(39,42)(40,46)(43,48)(1,4)(2,7)(3,9)(5,13)(6,12)(8,16)(10,15)(11,14)(17,21,23,18)(19,27,30,24)(20,25,29,31)(22,26,28,32)(33,37,39,41)(34,42,44,36)(35,46,38,48)(40,45,43,47)(1,5)(2,8)(3,10)(4,11)(6,14)(7,15)(9,16)(12,13)(17,22,23,28)(18,26,21,32)(19,29,30,20)(24,31,27,25)(33,38,39,35)(34,43,44,40)(36,47,42,45)(37,46,41,48)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.