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