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