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