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