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