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