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