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