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