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