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