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