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