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