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)(17,18,22,25)(19,21,27,23)(20,24,28,31)(26,29,32,30)(34,38)(36,44)(39,41)(42,48)(1,3,7,5)(2,8,6,10)(4,13,14,11)(9,16,12,15)(20,28)(24,31)(26,32)(29,30)(33,34)(35,41)(36,40)(37,38)(39,43)(42,47)(44,45)(46,48)(17,19,22,27)(18,23,25,21)(20,26,28,32)(24,30,31,29)(33,34,37,38)(35,39,43,41)(36,40,44,45)(42,46,48,47)(1,4,7,14)(2,9,6,12)(3,11,5,13)(8,15,10,16)(17,19)(18,21)(20,26)(22,27)(23,25)(24,29)(28,32)(30,31)(33,34)(35,39)(36,40)(37,38)(41,43)(42,46)(44,45)(47,48)(1,5,7,3)(2,8,6,10)(4,11,14,13)(9,16,12,15)(17,20,22,28)(18,24,25,31)(19,26,27,32)(21,29,23,30)(33,35)(34,39)(36,42)(37,43)(38,41)(40,46)(44,48)(45,47)(1,6,7,2)(3,10,5,8)(4,12,14,9)(11,16,13,15)(17,21)(18,19)(20,29)(22,23)(24,26)(25,27)(28,30)(31,32)(33,36,37,44)(34,40,38,45)(35,42,43,48)(39,46,41,47)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.