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