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