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