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