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