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