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