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