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