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