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