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