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