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