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