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