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