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