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