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