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