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