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