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)(9,15)(10,13)(14,16)(18,21)(19,20)(26,29)(27,28)(33,34,40,39)(35,45,47,41)(36,48,46,42)(37,44,38,43)(1,2)(3,7)(4,8)(5,6)(9,14)(10,13)(11,12)(15,16)(17,18,23,21)(19,25,20,24)(22,26,30,29)(27,32,28,31)(33,35)(34,41)(36,37)(38,46)(39,45)(40,47)(42,44)(43,48)(2,6)(7,13)(8,11)(14,15)(17,19,23,20)(18,24,21,25)(22,27,30,28)(26,31,29,32)(33,36,40,46)(34,42,39,48)(35,37,47,38)(41,44,45,43)(1,3,5,10)(2,7,6,13)(4,9,12,16)(8,14,11,15)(17,20,23,19)(18,25,21,24)(22,28,30,27)(26,32,29,31)(33,37,40,38)(34,43,39,44)(35,36,47,46)(41,48,45,42)(1,4,5,12)(2,8,6,11)(3,9,10,16)(7,14,13,15)(17,21,23,18)(19,25,20,24)(22,29,30,26)(27,32,28,31)(33,38,40,37)(34,44,39,43)(35,46,47,36)(41,42,45,48)(1,2)(3,7)(4,8)(5,6)(9,14)(10,13)(11,12)(15,16)(17,22,23,30)(18,26,21,29)(19,27,20,28)(24,31,25,32)(33,39,40,34)(35,45,47,41)(36,42,46,48)(37,44,38,43)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.