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