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)(17,18,24,27)(19,28,23,25)(20,22,21,26)(29,31,30,32)(33,34,38,39)(35,36,43,40)(37,41,46,47)(42,44,48,45)(1,3,7,5)(2,8,6,10)(4,11,14,13)(9,15,12,16)(17,19,24,23)(18,25,27,28)(20,30,21,29)(22,31,26,32)(34,39)(36,40)(41,47)(44,45)(17,20,24,21)(18,26,27,22)(19,29,23,30)(25,31,28,32)(33,35)(34,40)(36,39)(37,42)(38,43)(41,45)(44,47)(46,48)(1,4,7,14)(2,9,6,12)(3,11,5,13)(8,15,10,16)(17,21,24,20)(18,22,27,26)(19,30,23,29)(25,32,28,31)(33,36,38,40)(34,35,39,43)(37,45,46,44)(41,48,47,42)(1,5,7,3)(2,10,6,8)(4,13,14,11)(9,16,12,15)(17,22)(18,20)(19,31)(21,27)(23,32)(24,26)(25,30)(28,29)(1,6,7,2)(3,10,5,8)(4,9,14,12)(11,15,13,16)(17,23,24,19)(18,25,27,28)(20,30,21,29)(22,32,26,31)(33,37,38,46)(34,41,39,47)(35,42,43,48)(36,44,40,45)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.