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