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