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)(17,18,22,27,23,28,39,46)(19,29,32,42,33,45,35,24)(20,34,36,41,31,25,37,43)(21,26,30,44,38,40,48,47)(1,3)(2,5)(4,8)(6,7)(10,13)(11,15)(17,19,23,33)(18,24,28,42)(20,30,31,48)(21,37,38,36)(22,35,39,32)(25,40,34,26)(27,45,46,29)(41,47,43,44)(2,6)(5,7)(9,10)(11,14)(12,13)(15,16)(17,20)(18,25)(19,30)(21,35)(22,36)(23,31)(24,40)(26,42)(27,43)(28,34)(29,47)(32,38)(33,48)(37,39)(41,46)(44,45) involution — undirected(3,8)(5,7)(10,13)(14,16)(17,21,22,30,23,38,39,48)(18,26,27,44,28,40,46,47)(19,31,32,37,33,20,35,36)(24,41,29,25,42,43,45,34)(9,11,12,15)(10,14,13,16)(20,31)(21,38)(25,34)(26,40)(30,48)(36,37)(41,43)(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.