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