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