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