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