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