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