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