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