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