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)(35,37,36,41)(38,42,46,47)(43,45,44,48)(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)(42,47)(43,44)(2,7)(5,9)(8,14)(12,15)(18,24)(19,25)(26,29)(27,32)(33,35,39,36)(34,41,40,37)(38,43,46,44)(42,48,47,45)(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)(34,37,40,41)(38,44,46,43)(42,45,47,48)(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)(34,35)(36,40)(38,45)(39,41)(42,43)(44,47)(46,48)(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)(33,38,39,46)(34,42,40,47)(35,43,36,44)(37,45,41,48)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.