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