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