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