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