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