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)(19,27)(20,22)(21,24)(23,26)(25,32)(28,29)(30,31)(33,34,39,37)(35,43,45,40)(36,46,47,41)(38,42,44,48)(4,11)(7,9)(12,16)(14,15)(19,21)(24,27)(28,30)(29,31)(33,35,39,45)(34,40,37,43)(36,44,47,38)(41,48,46,42)(2,3)(7,9)(8,10)(14,15)(17,19,23,21)(18,24,26,27)(20,30,25,28)(22,29,32,31)(33,34,39,37)(35,40,45,43)(36,41,47,46)(38,42,44,48)(1,3,6,2)(4,9,11,7)(5,10,13,8)(12,15,16,14)(17,20,23,25)(18,22,26,32)(19,28,21,30)(24,31,27,29)(33,36)(34,41)(35,44)(37,46)(38,45)(39,47)(40,48)(42,43)(1,4,6,11)(2,7,3,9)(5,12,13,16)(8,14,10,15)(17,21,23,19)(18,24,26,27)(20,28,25,30)(22,29,32,31)(33,37,39,34)(35,43,45,40)(36,41,47,46)(38,42,44,48)(1,5,6,13)(2,8,3,10)(4,12,11,16)(7,14,9,15)(17,22)(18,25)(19,29)(20,26)(21,31)(23,32)(24,28)(27,30)(33,38,39,44)(34,42,37,48)(35,36,45,47)(40,41,43,46)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.