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