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