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