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