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