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