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