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