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