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)(17,18,23,21)(19,24,27,29)(20,25,31,30)(22,26,32,28)(33,34,40,44)(35,39,37,42)(36,46,45,41)(38,43,47,48)(1,3,7,6)(2,8,4,10)(5,13,14,11)(9,16,12,15)(17,19,23,27)(18,24,21,29)(20,28,31,26)(22,30,32,25)(33,35,40,37)(34,39,44,42)(36,47,45,38)(41,43,46,48)(2,4)(8,10)(9,12)(15,16)(19,27)(20,31)(24,29)(25,30)(33,36,40,45)(34,41,44,46)(35,38,37,47)(39,48,42,43)(1,4,7,2)(3,10,6,8)(5,9,14,12)(11,15,13,16)(17,20)(18,25)(19,28)(21,30)(22,24)(23,31)(26,27)(29,32)(33,37,40,35)(34,42,44,39)(36,38,45,47)(41,48,46,43)(1,5,7,14)(2,9,4,12)(3,11,6,13)(8,15,10,16)(17,21,23,18)(19,29,27,24)(20,25,31,30)(22,26,32,28)(33,38)(34,43)(35,45)(36,37)(39,41)(40,47)(42,46)(44,48)(1,6,7,3)(2,10,4,8)(5,11,14,13)(9,15,12,16)(17,22)(18,26)(19,30)(20,24)(21,28)(23,32)(25,27)(29,31)(33,39,40,42)(34,35,44,37)(36,48,45,43)(38,46,47,41)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.