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