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