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