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