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