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