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)(18,23)(19,26)(25,32)(27,28)(1,3)(2,5)(4,11)(6,9)(7,15)(8,12)(10,13)(14,16)(17,18)(19,24)(20,25)(21,26)(22,23)(27,29)(28,31)(30,32)(33,34,39,37)(35,42,36,40)(38,41,46,45)(43,48,44,47)(2,7)(3,9)(8,16)(10,11)(33,35,39,36)(34,40,37,42)(38,43,46,44)(41,47,45,48)(1,3)(2,5)(4,11)(6,9)(7,15)(8,12)(10,13)(14,16)(17,19,22,26)(18,24,23,21)(20,28,30,27)(25,31,32,29)(33,36,39,35)(34,40,37,42)(38,44,46,43)(41,47,45,48)(1,4,6,13)(2,8,7,16)(3,10,9,11)(5,14,15,12)(17,20,22,30)(18,25,23,32)(19,27,26,28)(21,31,24,29)(33,37,39,34)(35,42,36,40)(38,41,46,45)(43,47,44,48)(1,5)(2,3)(4,12)(6,15)(7,9)(8,11)(10,16)(13,14)(17,21,22,24)(18,26,23,19)(20,29,30,31)(25,27,32,28)(33,38)(34,41)(35,43)(36,44)(37,45)(39,46)(40,47)(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.