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