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