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)(33,34,39,37)(35,36,43,40)(38,41,46,45)(42,44,48,47)(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)(33,35,39,43)(34,40,37,36)(38,42,46,48)(41,47,45,44)(2,5)(7,9)(8,12)(15,16)(19,26)(22,24)(27,29)(30,32)(33,34,39,37)(35,40,43,36)(38,45,46,41)(42,44,48,47)(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)(34,35)(37,43)(38,44)(39,40)(41,42)(45,48)(46,47)(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)(33,37,39,34)(35,40,43,36)(38,45,46,41)(42,47,48,44)(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)(33,38)(34,41)(35,42)(36,44)(37,45)(39,46)(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.