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