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