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