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