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