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