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