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