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