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