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