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