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