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