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