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