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