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