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