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