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