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