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