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