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