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