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